code: def __init__(self, dim_in, dim_out):
      super().__init__()
      self.conv = nn.Conv2d(dim_in, dim_out, 3, stride=2, padding=1)
  
imports: import torch
  from torch import nn, einsum
  from einops import rearrange
  from einops.layers.torch import Rearrange, Reduce
  import torch.nn.functional
label_desc: Use image node_id 1 to create a new Downsample object from inherited base classes: nn with example: obj = Downsample(dim_in, dim_out)